Kentuckienne, I am a biologist by training, so I have experience in biological experimental design.

Not to belabor the point (understand I'm not at all trying to be nasty or come at you, just adding the actual biological experience here), but my contribution here is to temper your expectations - not necessarily dissuade you from doing it. You aren't able to correctly identify the bacteria you are culturing - last checked you don't have a several thousand dollar DNA sequencer. If you can't even identify what you are culturing you cannot draw any valid conclusions.

Microbiology is fickle that way. As you somewhat implied yourself when you acknowledged no biological experience above, biology is not chemistry.